<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title></title>
</head>
<body>
<script>
    console.log(parseInt("010"));
    console.log(parseInt("0x10"));
    console.log(isFinite(1/0));//false
    console.log(isFinite(Infinity));//false
    console.log(isFinite(NaN))//FALSE

    console.log(1||2||0);//1
    console.log(0||2||1);//2
    console.log(1&&3&&0);//0
    console.log(0&&2&&3);//0

    switch (5){
        case 2:console.log(2);break;
        case 3:console.log(3);break;
        default:console.log("number");
    }
</script>
</body>
</html>